Reposting content from infrequently.org
Alex Russell puts into words what the popular phrase βSafari is the new IE6β really means. Insightful.
This is not an exhaustive list, and each entry can block entire classes of applications from credibly being possible on the web. The real world impact is challenging to estimate. Weighing up the deadweight losses in start-ups not attempted and higher prices for small businesses who must pay to develop native apps seems a promising angle for economists to investigate.